Wrong Page Format : Mesage Class SSFCOMPOSER and message no 026

Dear Team,

I have problem in background job, when ever I run the zprogramme in background I got the error Wrong page format;

Message class SSFCOMPOSER

Message no 026

Message Type A

When I run this zprogramme in forground it is run properly; only get the failed when it is run in background

Thanks in Advance

Gokul